What is the meaning of the word "nail"?

Definitions:

A small, slender metal object with a sharp point on one end and a flat head on the other, used for fastening materials like wood by being hammered into place. NOUN
- He used a hammer to drive the nail into the wood.
Attach something somewhere by means of nails. VERB
- Nail the board onto the wall.
Refers to the hard, flat covering on the upper surface of the tips of human fingers and toes. ADJECTIVE
- She painted her nails with a bright color.
Succeed in obtaining a position. VERB
- They nailed a spot on the team.